s1 = '\\'
s2 = '\\\\'
s3 = '\''
s4 = '"'
s5 = '\n'
s6 = "'foo'bar\nbaz\\"
s7 = r'^\w+$'
s8 = u"'459'"
s9 = u'459'
s10 = u"\u2764"

s1, s2, s3, s4, s5, s6, s7, s8, s9, s10
